Vaporizer



1, w. BUTLER.

VAPORIZER. APPLICATION FILED FEB. 1a. 1918.

la'tented Aug. 26, 1912).

UNITED STATES PATENT OFFICE.

JOHN W. BUTLER, 0F BETHEL, CONNECTICUT, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, 0F ONE-HALF TO FRANK G. METCALF, OF IBE'IHEL, CONNECTICUT.

VAPORIZER Specification of Letters Patent.

Patented Aug. 26, 1919.

Application filed February 18, 1918. Serial No. 217,784.

Figure 1 a side-view of partsof a motor engine illustrating the location of my improved vaporizer.

Fig. 2 an enlarged vertical sectional view of the vaporizer.

Fig. 3 an end view of the vaporizer, detached.

Fig. 4 a transverse vertical sectional view of the same.

This invention relates to an improvement in Vaporizers particularly adapted for gaso- 'lene engines. In the more general arrangement of engines vaporized gasolcne isfaken directly from the carburetor to the intake manifold; and while this vapor is more or less in the nature of gas, particles of gasolcne pass to the manifold, and hence form carbon in the cylinders and the discharge from the exhaust is a noxious gas. Attempts have been made to superheat theyapor as it passes from the carbureter to,the intake manifold from the exhaust, but if all the heat from the exhaust is applied for this purpose, the heat is too great and the vapor or gas is liable to explode.

The object of this invention is to provide a. vaporizer which will be heated by a portion of the exhaust vapor; and the invention consists in the construction hereinafter described and particularl recited in the claim.

In carrying out ,my invention, I employ a heating chamber 5 adapted in size and form for the particular engine with which it is to be used, and adapted to be secured to a carburetor 6 and an intake manifold 7.

' Mounted in the ends of this chamber, are a series of gas tubes 8 herein shown as seven in number through which vapor passes from the carburetor to the intake manifold. Opening out of the exhaust manifold 9 is a pipe 10 the end of'which u;r o.noct (l w th a T-filling 11 mounted on, and opening into the chamber 5, andin the bottom of the chamber 5 is an auxiliary exhaust pipe 12. It will be noted that the diameter of the pipe .10 is comparatively small as compared with the capacity of the exhaust manil" ld, so that only a portion of the hot gas from the exhaust manifold passes through the chamber 5,

but this is sufficient to superheat and vaporize the mixture passing from the carburetor to the intake manifold. It may also be noted that the cubic capacity of all the tubes 8 is less than the cubic capacity of the intake passage so that the passage is constricted through the vaporizer, and gases or vapors passing through the tubes, are subjected to much higher velocity of travel than the velocity of the intake passage proper. Owing to this increased velocity, together with the smaller volumes of gases or vapors'in each tube, the liquid particles are stretched, pulled apart or broken up into smaller liquid particles or vapor, which, when heated, complete the vaporization into a dry uniform mixture. Fuelmixture thus admitted to the intake manifold is vaporized and superheatcd so that when explosion takes place in the cylinder, the combustion will be so nearly perfect that no unburned gases pass into the exhaust manifold.

Preferably and as herein shown, I mount a tubular arm 13 in the T-fitting l1 and provide the upper end of the arm with a ren'iovable plug 14, so that before starting a cold engine hot water may be passed through the chamber 5 by removing the plug 14 and pouring water into the arm 13, this water passing through the chamber around the tubes 8 and out of the auxiliary exhaust pipe 12. It will be understood that the heating chamber will be of such (llll'IPi'lSlOll as is required by a mathen'iatical calculation governed hy.varlations in piston displacements, and the particular form of the chamber may be varied according to the flanges on the manifold and carburetor with which it is connected. By taking only a portion of the heat from the exhaust manifold, I am enabled to auton'iatically control the ten'iperature in the heating chamber by using a pipe of predetermined capacity, and 103 thus avoid the use of adjusting valves, as too much heat interferes with the proper vaporizing or' gasolcne, and unless there is suillcicnt heat the vaporizing will not be properly accomplished.

having integral ends, a series of tubes mounted in said ends,

said tubes being arranged Within the diameter of the intake passage so as to form a constriction of the intake pas-' -10 sage through which tubes all of the vapor v in the intake passage flows,

heating chamber.

In testimony whereof, I have signed this specification'in the presence of tWosub- 15 scribing Witnesses.

JOHN W. BiJTL'ER. Witnesses I ,l

JWV; AMBLER, w C. F. B. PEAL.

and means for conducting a heating medium through the 

